Originally Posted by
BackPacker
In any case, does a controller know, or is he/she supposed to know, which Aztec on final is a public transport flight, and which Aztec is close to max landing weight?
No, which is why it is irrelevant information. Your Ops Manual might prohibit lots of things so you have to say unable more often than a private flight might have to. But it isn't a controllers job to guess what is in your Ops Manual or your SOPs or your personal minima.
Originally Posted by
BackPacker
But the main message is: you can refuse such requests, and you should if it threatens your flight safety.
Totally agree.